Setting autoReload="false" and using MappedDiagnosticsContext.SetScoped("email", emailAddressVar) then started working properly. Although the methods in the MDC class are static, the diagnostic context is managed on a per-thread basis, allowing each server thread to bear a distinct MDC stamp. Typically, multiple clients will be served by multiple threads on the server. I ran across the note about "autoReload", which had been set "true" initially in our config. Are you looking for the global diagnostic context / mapped diagnostic context Set in your code: GlobalDiagnosticsContext.Set('prop1', 'I'm scoped for all threads') MappedDiagnosticsContext. Mapped Diagnostic Contexts shine brightest within client server architectures. But, any logging that would happen left empty strings in the user session column in the DB log table. In code in a service IClaimsTransformation class conducting TransformAsync() after user authentication in Okta, we attempted to set the email by calling MappedDiagnosticsContext.SetScoped("email", emailAddressVar). One of them was for a user session parameter: NET Core 5 and Blazor (Server), we have an app authenticating the user with Okta and needed to pull the user's email address as a means of a scoped identification for our needs when logging. Luckily, both Spring and Hibernate are extremely customizable, so we can intercept all those actions and apply the MDC transition logging.With lack of much posted resolutions regarding MappedDiagnosticsContext and MappedDiagnosticsLogicalContext functionality issues I thought I'd share, even on this old thread. after the JPA Persistence Context is closed, we remove the txId variable from the MDC logging context.after the JPA transaction ends, we remove the transaction identifier.after a statement is executed, we check whether the relational database has assigned a transaction identifier The Mapped Diagnostic Context ( MDC ) in the Logback is a great way to differentiate them. Mapped Diagnostic Context (MDC) The basic idea of MDC is to provide a way to enrich log messages with pieces of information that could not be available in the scope where the logging actually occurs, but that can be an indeed useful to better tracking the execution of the program.So each thread can access to the values of its MDC within the thread life-cycle. Every client request will be handled by a different thread. In the multi-threaded systems, where each user request is handled by a separate thread, the MDC context enables us to produce different logging output for each request.
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